Proposal to establish an expert working group to review and update the provisions of UN Regulation No. 110 in order to produce a new consolidated, harmonized version of the regulation.

Pursuant to research conducted in Japan, this document recommends amending UN R110 with regard to:

1. Welded metal cylinders
2. Steel cylinders (CNG-1 cylinder) and Steel liner cylinders (CNG-2 cylinder)
3. Accessories fitted to the cylinder, and
4. Indication of cylinder and accessories fitted to the cylinder.

The document also raises the possibility of further considerations concerning LNG cylinders.

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ISO Standard 11439 concerns “High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles”. ISO 6722 concerns ’60 V and 600 V single-core cables — Part 1: Dimensions, test methods and requirements for copper conductor cables".

Proposal to add a definition for “CNG Accumulator” and to revise a related decision tree flow chart.

Corrections to the proposal to clarify the provisions of Chapter 18 following the introduction of automatic valves (see report GRSG/84, para. 38).

Request to postpone consideration of the Dutch proposal concerning the discharge of natural gases from a pressure relief device (PRD) in anticipation of conclusions and best practices on the location and venting of PRD from a research program underway in the US.